PRECAUTIONS
The Importance of Periodic
Maintenance
Engine deterioration and wear occur in
proportion to the length of time the engine
has been in service and the conditions the
engine is subjected to during operation.
Periodic maintenance prevents unexpected
downtime, reduces the number of accidents
due to poor machine performance and helps
extend the life of the engine.
Performing Periodic
Maintenance
WARNING! NEVER block windows,
vents, or other means of ventilation if
the engine is operating in an enclosed
area. All internal combustion engines
create carbon monoxide gas during
operation. Accumulation of this gas
within an enclosure could cause illness
or even death. Make sure that all
connections are tightened to
specifications after repair is made to the
exhaust system. Failure to comply could
result in death or serious injury.
The Importance of Daily Checks
Periodic Maintenance Schedules assume
that the daily checks are performed on a
regular basis. Make it a habit of performing
daily checks before the start of each
operating day. See Daily Checks on page
46.
Keep a Log of Engine Hours and
Daily Checks
Keep a log of the number of hours the engine
is run each day and a log of the daily checks
performed. Also note the date, type of repair
(e.g., replaced alternator), and parts used
for any service needed between the periodic
maintenance intervals. Periodic
maintenance intervals are every 50, 250,
500, 1000 and 2000 engine hours. Failure to
perform periodic maintenance will shorten
the life of the engine.
Yanmar Replacement Parts
Yanmar recommends that you use genuine
Yanmar parts when replacement parts are
needed. Genuine replacement parts help
ensure long engine life.
Tools Required
Before you start any periodic maintenance
procedure, make sure you have the tools
you need to perform all of the required tasks.
Ask Your Authorized Yanmar
Marine Dealer or Distributor For
Help
Our professional service technicians have
the expertise and skills to help you with any
maintenance or service related procedures.
Required EPA Maintenance
To maintain optimum engine performance
and compliance with the Environmental
Protection Agency (EPA) Regulations
Engines, it is essential that you follow the
Periodic Maintenance Schedule on page
42 and Periodic Maintenance Procedures
PERIODIC MAINTENANCE
BY Series Operation Manual
39
© 2008 Yanmar Marine International